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Author Topic: I'm leaking! Water expansion tank in the engine bay for Murena 2.2  (Read 35000 times)
GP
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« Reply #45 on: January 30, 2011, 06:27:27 pm »

Not forgotten. Went into Brise on friday to encourage them but they are very busy right now.
Will advise price soonest.

GP
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davidewanprice
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« Reply #46 on: February 16, 2011, 11:20:38 pm »

Hi there, any news on a price, have some money saved for finally getting my car back on the road so am wanting to get something sorted soon, I have also been looking at a forge Motorsport alloy tank which is a similar price and might just work (for Renault 5 turbo 2 http://www.forgemotorsport.co.uk/content.asp?inc=product&cat=0011&product=FMHT058), I think it holds approx 1.8L so not quite as much a the original (I think approx 2L). Let me know what you think of both options?
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Oetker
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« Reply #47 on: February 17, 2011, 12:12:45 am »

That is funny, I am just busy to find a replacement for it and you come up with the same thing.
I have a topic about it on the Belgium forum but can't link the members section.



I am comparing things for months and I think this is the way to go.
But I go for the plastic one.
The biggest problem was to find a cap that had the same properties as the Murena cap for the plastic tank.
The Murena cap works with 0.8 bar (12 psi) and also when in the cool down release of under pressure is needed.
Renault couldn't help me out there, because the caps they have are not exact, and I like this figures to be perfect.
After a lot of research I found the right cap on a different car
I have this things ready for mounting, but little time to finnish the job an test it out.
If you want to be the guinea-pig I wouldn't mind, but why not go for the cheap one to experiment.

http://cgi.ebay.nl/ws/eBayISAPI.dll?ViewItem&item=280626444311&ssPageName=STRK:MEWAX:VRI

Leave 0.6 Liter in this tank for expansion, because there is 11 liter coolant in the system that must expand, so the max level must be lower then the max indication a bit.
Also the 2 big connections  are to big for the standard hoses so some modification is needed.
If you go this way I can provide you the information of what cap to use.
I wanted this to keep for myself till I tested it out and not disturb the things graham is doing for people looking, but now you come up with the same thing I can help with the info I already gathered.

« Last Edit: February 17, 2011, 12:36:22 am by Oetker » Logged

I feel like Jonah, only my fish looks different.
Murena 2.2 Red 1982. Murena 1.6 black on places.
davidewanprice
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« Reply #48 on: February 17, 2011, 08:40:45 am »

Well thank you for showing this, if the alloy replacement can still be obtained and at a good price then I'm in but this does seem a good alternative. That sizes are the inlets/outlets? Im sure a short piece of pipe into an alloy reducer would work nicely. Have you tried to see how it can be mounted in the engine bay, looks like it might still fit into the original fitting with some modification of the wire clips.
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Oetker
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« Reply #49 on: February 17, 2011, 08:47:07 am »

If you go for the Renault alloy, make sure it has the conic double bottom and the upper plate behind the small inlet as the Renault tank have.
It is important as a precaution avoiding air in the system.
This Renault tank is a clever tank wich is needed for the 2.2 , and maybe it is also good to mount in the 1.6 so you don't need the modification with the expansion valve.
At the breakers I got a tank for a Clio with the double outlet at the bottom (There are also with one).
They have a rubber strip to mount wich can also be used at the Murena.
« Last Edit: February 17, 2011, 08:51:17 am by Oetker » Logged

I feel like Jonah, only my fish looks different.
Murena 2.2 Red 1982. Murena 1.6 black on places.
Oetker
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« Reply #50 on: February 17, 2011, 10:27:46 am »

I provide some extra info.
Here is a picture how it should be connected.

Connect things as stated in my picture, and try to mount the tank as high as possible.
The 77**** numbers are the Renault numbers for the tank.
The blanc cap is 0.7 bar but Renault could not deliver, and I doubt if it releases the under pressure in cool down..
You have to go to the Peugeot dealer for the cap.
It is Peugeot number 1303.40, and it cost around €8.-
It is 0.8 bar (12psi) wich is exactly what is needed.
Also I tested the under pressure release, and that works fine.

There are disadvantages for this tank, and I don't now yet if it will work properly, but I will find out in a few weeks.
I am pretty sure it will do o.k.
The original tank is 2.5 litre.
This one is 1.6 litre.
That is a liter less in the system.
Also when water is released because of overheating, there is no output to mount the hose that leads down the car.
It will boil over at the cap. (who cares)
I will have to test it out in heavy stress for the engine in hot weather to see the engine not get overheated.
It has to be summer for that, so i am not in a hurry to finnish the job.
I calculated 0.5 litre expansion needed in a temperature rise of 80°C for the 11 litre coolant.
The max level has to be between max and min indication on the tank to give it room to expand.


« Last Edit: February 17, 2011, 01:40:15 pm by Oetker » Logged

I feel like Jonah, only my fish looks different.
Murena 2.2 Red 1982. Murena 1.6 black on places.
GP
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« Reply #51 on: March 08, 2011, 10:53:29 pm »

Latest from Brise Fabrication on the Aluminium Expansion Tanks is that they are so busy right now they will not be able to advise or start work until after Easter. They are still very keen for the business though.

Keep you posted.

G.P.
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Anders Dinsen
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« Reply #52 on: March 09, 2011, 06:10:53 pm »

Latest from Brise Fabrication on the Aluminium Expansion Tanks is that they are so busy right now they will not be able to advise or start work until after Easter. They are still very keen for the business though.

Keep you posted.

G.P.

That's ok. I can wait, but still interested :-)
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'82 Murena 2.2 prep 142
'01 Grand Espace 24v
'08 Smart Fortwo 0,8 cdi
Jon Weywadt
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« Reply #53 on: March 10, 2011, 08:48:36 am »

Latest from Brise Fabrication on the Aluminium Expansion Tanks is that they are so busy right now they will not be able to advise or start work until after Easter. They are still very keen for the business though.

Keep you posted.

G.P.
Me too. Just let us now when we can order  Cheesy
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Matranaut par excellence Cool
Matra_Hans
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Owner of Bagheera, Rancho, Murena & Espace


« Reply #54 on: March 10, 2011, 09:55:50 am »

Hi
I am also still interested, but can easily wait, especially since I am going to work in Amman for at least a year.

Hans
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Oetker
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« Reply #55 on: March 10, 2011, 04:04:47 pm »

The new expansiontank is in the car now.
I made a temoprary mounting for the time it is in test.
First 40 miles with the tank is done.
No problems detected till now.
The max level has to be in the middle between min and max and then there is enough room for the expansion needed.

video
http://www.youtube.com/watch?v=x8Mdx3TpEFU
« Last Edit: March 10, 2011, 10:06:32 pm by Oetker » Logged

I feel like Jonah, only my fish looks different.
Murena 2.2 Red 1982. Murena 1.6 black on places.
davidewanprice
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« Reply #56 on: March 15, 2011, 08:36:11 pm »

I'm not ruling out buying one but have been doing some looking around over the past week or two and I may have someone who will build me something very similar to the original for approx £80. I must admit I'm very tempted...

The web address is: http://www.specialistfabricationswelding.co.uk/cms/home
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davidewanprice
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« Reply #57 on: March 24, 2011, 09:34:33 pm »

OK so temptation led me to a purchase, I must admit to worrying about what I might get for my money but i'm very happy, the item isnt an exact replica but thats fine with me.

I sent my spare cracked tank down for him to take a look at and base as a template and once we were both happy on what was being done it took 1 day to make and I received it through the post the next day.. All this cost me £88.50 posted. That is service!

For anyone wishing to contact him, he has kept my old tank and would be happy to do these for anyone wanting one.

His details are:

Tony
07974413693
www.specialistfabricationswelding.co.uk

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Anders Dinsen
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« Reply #58 on: March 25, 2011, 03:34:38 pm »

Not bad, David, not bad at all. The lower price and the fact that he can supply it now makes it tempting. How do you plan to fit it to the wall?

/Anders

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'82 Murena 2.2 prep 142
'01 Grand Espace 24v
'08 Smart Fortwo 0,8 cdi
Jon Weywadt
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« Reply #59 on: March 25, 2011, 04:09:55 pm »

Not bad, David, not bad at all. The lower price and the fact that he can supply it now makes it tempting. How do you plan to fit it to the wall?

/Anders


I don't know how David would do it, but from the photos it looks like the tank has the two knobs that fit into the rubber grommets on the wall to the boot. therefore I suspect that a bit of bending of the original straps, to fit the slightly new shape, would do the trick nicely.

BTW, I made a new set of those straps in stainless wire, of course.  Grin Not difficult
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Matranaut par excellence Cool
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